The angle he throws from is unusual, and hitters notice
Bummer releases the ball from a sidearm slot, about 18 degrees above horizontal and 2.0 feet to the first-base side of the rubber.
241 tracked release points, averaging 5.0 feet off the ground.
When he falls behind, hitters know exactly what is coming
Behind in the count Bummer throws a fastball 76.2% of the time, against 38.6% when he is ahead.
63 pitches behind in the count, 70 ahead.
He fills the strike zone and makes hitters beat him
Bummer lives in the strike zone: 49.8% of his pitches are in it, 95th percentile.
241 pitches in 2026. 95th percentile among qualified pitchers in 2026, 28th in MLB.
This is the pitch he goes to when he needs the out
With two strikes Bummer goes to the curveball: 38% of his two-strike pitches, against 18.2% the rest of the time.
71 two-strike pitches in 2026.
There is one pitch of his that keeps getting hit
Contact off Bummer's sinker leaves the bat at 93.2 mph, against 81.7 off his sweeper.
88 and 47 of them thrown.
He gets by without much velocity, and it costs him
Bummer averages 85.6 mph across his arsenal, 7th percentile in the league.
241 pitches in 2026. 7th percentile among qualified pitchers in 2026, 499th in MLB.
His fastball is the pitch everything else is built on
Bummer's sinker averages 90.2 mph, and has touched 92.2.
88 thrown, 36.5% of his pitches.
One pitch of his runs sideways more than almost anyone's
Bummer's sinker moves 14.5 inches toward the first-base side, the biggest horizontal move in his arsenal.
88 thrown, averaging 90.2 mph.
He pitches differently depending on which hand is up
Bummer puts 52.9% of his pitches to right-handers in the zone and 46.7% of his pitches to left-handers.
121 pitches to right-handed hitters, 120 to left-handed hitters.
He works one part of the zone far more than the rest
Bummer lives at the bottom of the zone: his average pitch crosses at 2.15 feet, against a zone that runs 1.5 to 3.5.
241 located pitches in 2026.
Too much of the contact against him is loud
52.1% of the contact Bummer gives up is hit hard, 7th percentile.
241 pitches in 2026. 7th percentile among qualified pitchers in 2026, 500th in MLB.
He saves one pitch for one side of the plate
Bummer throws the sweeper 34.2% of the time against left-handers and 5% against right-handers.
121 pitches to right-handers, 120 to left-handers.
One type of hitter does all the damage against him
Hitters do their damage on his breaking balls: a .345 expected average against them, against .278 on his fastballs.
105 of his breaking balls thrown.
He lives on one side of the plate
Bummer works away from right-handers: his average pitch lands 3.7 inches to that side of the middle of the plate.
241 located pitches in 2026.
How much of the zone he uses depends on the count
Bummer puts 68.3% of his pitches in the zone when he is behind and 42.9% when he is ahead.
63 located pitches behind, 70 ahead.
When hitters connect off him, they hit it hard
Hitters average 91.7 mph off the bat against Bummer, 10th percentile.
241 pitches in 2026. 10th percentile among qualified pitchers in 2026, 486th in MLB.
He throws strikes to one type of hitter and not the other
Bummer lands 58.1% of his fastballs in the zone and only 39% of his breaking balls.
136 of his fastballs, 105 of his breaking balls.
He pitches around the zone once runners are on
Bummer throws 47.5% of his pitches in the zone with a runner in scoring position and 51.4% with the bases empty.
99 pitches with a runner in scoring position, 142 with the bases empty.
His pitches move in ways that fit together
Bummer works with 5 pitches: Sinker, Curveball, Sweeper and Cutter, and a little else. The sinker is 36.5% of everything he throws.
241 classified pitches in 2026.
His ball is straighter than it should be
Bummer's stuff spins at 2,156 rpm, 29th percentile in the league.
241 pitches in 2026. 29th percentile among qualified pitchers in 2026, 379th in MLB.
He leaves too much of it over the heart of the plate
23.2% of Bummer's pitches land in the middle third of the zone, the part of the plate hitters do their damage on.
56 of 241 located pitches.
He gets ahead early and pitches from in front all night
Bummer throws a strike on the first pitch 64.6% of the time.
65 plate appearances started in 2026.
The contact he allows should not turn into many hits
The quality of contact against Bummer projects a .307 average, 68th percentile.
241 pitches in 2026. 68th percentile among qualified pitchers in 2026, 173rd in MLB.
The gap between his pitches is what makes them work
10.1 mph separates Bummer's sinker from his curveball, 90.2 against 80.1.
88 and 58 of them respectively.
He gets so far down the mound the ball arrives early
Bummer releases the ball 6.5 feet down the mound, so the ball arrives sooner than the radar gun suggests.
186 tracked pitches in 2026.
One pitch of his spins more than almost anyone's
Bummer's curveball spins at 2,300 rpm, the highest in his arsenal.
58 thrown in 2026.
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The numbers behind these live in Pitch Data.
Take me there
The angle he throws from is unusual, and hitters notice
Bummer releases the ball from a sidearm slot, about 18 degrees above horizontal and 2.0 feet to the first-base side of the rubber.
241 tracked release points, averaging 5.0 feet off the ground.
He gets so far down the mound the ball arrives early
Bummer releases the ball 6.5 feet down the mound, so the ball arrives sooner than the radar gun suggests.
186 tracked pitches in 2026.
The numbers behind these live in Pitch Data.
Take me there
When he falls behind, hitters know exactly what is coming
Behind in the count Bummer throws a fastball 76.2% of the time, against 38.6% when he is ahead.
63 pitches behind in the count, 70 ahead.
This is the pitch he goes to when he needs the out
With two strikes Bummer goes to the curveball: 38% of his two-strike pitches, against 18.2% the rest of the time.
71 two-strike pitches in 2026.
How much of the zone he uses depends on the count
Bummer puts 68.3% of his pitches in the zone when he is behind and 42.9% when he is ahead.
63 located pitches behind, 70 ahead.
He gets ahead early and pitches from in front all night
Bummer throws a strike on the first pitch 64.6% of the time.
65 plate appearances started in 2026.
The numbers behind these live in Pitch Data.
Take me there
He fills the strike zone and makes hitters beat him
Bummer lives in the strike zone: 49.8% of his pitches are in it, 95th percentile.
241 pitches in 2026. 95th percentile among qualified pitchers in 2026, 28th in MLB.
The numbers behind these live in Pitch Data.
Take me there
There is one pitch of his that keeps getting hit
Contact off Bummer's sinker leaves the bat at 93.2 mph, against 81.7 off his sweeper.
88 and 47 of them thrown.
His fastball is the pitch everything else is built on
Bummer's sinker averages 90.2 mph, and has touched 92.2.
88 thrown, 36.5% of his pitches.
He saves one pitch for one side of the plate
Bummer throws the sweeper 34.2% of the time against left-handers and 5% against right-handers.
121 pitches to right-handers, 120 to left-handers.
His pitches move in ways that fit together
Bummer works with 5 pitches: Sinker, Curveball, Sweeper and Cutter, and a little else. The sinker is 36.5% of everything he throws.
241 classified pitches in 2026.
The gap between his pitches is what makes them work
10.1 mph separates Bummer's sinker from his curveball, 90.2 against 80.1.
88 and 58 of them respectively.
One pitch of his spins more than almost anyone's
Bummer's curveball spins at 2,300 rpm, the highest in his arsenal.
58 thrown in 2026.
The numbers behind these live in Pitch Data.
Take me there
He gets by without much velocity, and it costs him
Bummer averages 85.6 mph across his arsenal, 7th percentile in the league.
241 pitches in 2026. 7th percentile among qualified pitchers in 2026, 499th in MLB.
The numbers behind these live in Pitch Data.
Take me there
One pitch of his runs sideways more than almost anyone's
Bummer's sinker moves 14.5 inches toward the first-base side, the biggest horizontal move in his arsenal.
88 thrown, averaging 90.2 mph.
The numbers behind these live in Matchups.
Take me there
He pitches differently depending on which hand is up
Bummer puts 52.9% of his pitches to right-handers in the zone and 46.7% of his pitches to left-handers.
121 pitches to right-handed hitters, 120 to left-handed hitters.
The numbers behind these live in Pitch Data.
Take me there
He works one part of the zone far more than the rest
Bummer lives at the bottom of the zone: his average pitch crosses at 2.15 feet, against a zone that runs 1.5 to 3.5.
241 located pitches in 2026.
He lives on one side of the plate
Bummer works away from right-handers: his average pitch lands 3.7 inches to that side of the middle of the plate.
241 located pitches in 2026.
He leaves too much of it over the heart of the plate
23.2% of Bummer's pitches land in the middle third of the zone, the part of the plate hitters do their damage on.
56 of 241 located pitches.
The numbers behind these live in Spray Chart.
Take me there
Too much of the contact against him is loud
52.1% of the contact Bummer gives up is hit hard, 7th percentile.
241 pitches in 2026. 7th percentile among qualified pitchers in 2026, 500th in MLB.
When hitters connect off him, they hit it hard
Hitters average 91.7 mph off the bat against Bummer, 10th percentile.
241 pitches in 2026. 10th percentile among qualified pitchers in 2026, 486th in MLB.
The contact he allows should not turn into many hits
The quality of contact against Bummer projects a .307 average, 68th percentile.
241 pitches in 2026. 68th percentile among qualified pitchers in 2026, 173rd in MLB.
The numbers behind these live in Pitch Data.
Take me there
One type of hitter does all the damage against him
Hitters do their damage on his breaking balls: a .345 expected average against them, against .278 on his fastballs.
105 of his breaking balls thrown.
He throws strikes to one type of hitter and not the other
Bummer lands 58.1% of his fastballs in the zone and only 39% of his breaking balls.
136 of his fastballs, 105 of his breaking balls.
The numbers behind these live in Matchups.
Take me there
He pitches around the zone once runners are on
Bummer throws 47.5% of his pitches in the zone with a runner in scoring position and 51.4% with the bases empty.
99 pitches with a runner in scoring position, 142 with the bases empty.
The numbers behind these live in Pitch Data.
Take me there
His ball is straighter than it should be
Bummer's stuff spins at 2,156 rpm, 29th percentile in the league.
241 pitches in 2026. 29th percentile among qualified pitchers in 2026, 379th in MLB.
White Sox
Career team 2017–2023